Welded beam



- mzmw Mamh 8 9 3927' c. SCHENCK WELDED BEAM Filed April 27, 1926 lNVENTOR harles Salaam 41'.

ATTORNEY Patented Mar. 3, 1927.

' UNITED STATES 1,620,293 PATENT OFFICE. i

CHARLES SCHENGK, F BETHLEHEM, PENNSYLVANIA, ASSIGNdR TO BETHLEHEM STEEL.COMPANY.

WELDED BEAM.

Application filed April 27,

web member is staggered relative to the general direction of the beam.

. The primary objects of the invention are to secure by means of thestaggered web member greater resistance to lateral flexure while at thesame time securing ease of assembly by electric welding.

Referring to the accompanying drawings: Fig. 1 is a'longitudinalelevation of the am" Figs 2, 3, 4, and '5 are sections taken on thelines .II-II, IIIIII, IV-IV, and

' V-V, respectively oi Fig. 1; and,

Fig. 6 is a. section similar to Figs. 2 and 3 of a modification.

In the embodiment of the invention first shown, the two longitudinalmembers, 1 and 2, are each provided with parallel ribs 3 and 4 on theiropposing faces. The web member 5, zigzag in form, is electrically weldedat its bends to alternate ribs of the longitudinal members to permit ofthe web member being staggered in the general direction of the beam. Toillustrate, if the connection between the web member 5 is with rib 3,the next joint or connection with member 2 will also be with rib 3,while the succeeding two joints with the two longitudinal members willbe with rib 4, this alternation pging continued throughout the lengthofthe The web member is here shown as being square in cross section butobviously the particular shape is of no material significance so far asthe invention is concerned.

. The ends of the longitudinal members are united and supported byplates 6.

In efiecting the staggering of the web member, it is not essential thatit be joined to the ribs in the particular sequence just indicated. Itis only necessary that at defi- -nite intervals the bends uniting withthe longitudinal members be with difierent ribs, laterally spaced. Forexample, the web member might be connected with members ,1926. SerialNo. 104,871.

Furthermore, it is not essential that there be two ribs on eachlongitudinal member. There might be three or even more in which case avariety of staggered arrangements could obviously be produced.

n Then too, it is not even requisite that each member have a pluralityof ribs. For

instance, as is indicated in Fig. 6, one of the longitudinal members 1'may have the single rib 7, the staggered effect being produced byjoining the strut first with rib 3, then with rib 7, and then with rib4, according to the desired interval.

In welding the joints, such a method as that disclosed in the patent toLachman, 1,085,089, is employed. An electric current is passed througheach joint and pressure is applied to cause the rib to become more orless embedded in the web member.

Of course, it is not. new to stagger the web member of a beam or girderbut my invention resides in the way in which I secure the advantage ofsucha structure with means for easily assembling byelectric welding. Itshould be noted that the ribs perform a triple function. They furnishstrength to the longitudinal members; they permit of the localizedheating necessary in electrical welding because of their limitedcontacting surface;' and theyfurnishthe laterally spaced surfaces ofjuncture for permitting of the staggered arrangements.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is: 4

1. A structural beam comprising two longitudinal members, the opposingfaces of each provided with a plurality of longitudinal ribs, anintegral, continuous zigzag web member welded at its bends alternatelyto the ribs on the longitudinal members and staggered relative to thegeneral direption of the beam.

2. A structural beam comprising two longitudinal members, one ofsaidmembers having a plurality of ribs facing the other member, anintegral continuous zigzag web .member joined at its bends to thelongit11.

dinal' members, being welded to alternate ribs of the ribbed member andbeing staggered relative to the general direction of the beam.

3. A structural beam comprising two longitudinal members, one of saidmembers having a plurality of longitudinal ribs facing the other member,an integral eonti'nuous zigzag web member joined at its bends to the lon'tudinal members, being welded at intervals to different .ribs of theribbed member and being staggered relative to the general direction ofthe beam.

4. A structural beam comprising two longitudinal members, the opposingfaces of each having a plurality of longitudinal ribs, an integralcontinuous zigza brace member welded at intervals to difierent ribs ofeach of the longitudinal members, and being staggered relative to thegeneral direction of the beam.

5. A structural beam comprising two longitudinal members, one of saidmembers having aplurality of laterally spaced ribs,

facing the other. member, an integral con-' eaoaos tinuous zigzag webmember 'oined at its bends to the longitudinal mem ers, the web memberbeing welded alternately to the ribs of the longitudinal members tothereby give it a staggered relationship to the general tinuous zigzagweb member joined at its' bends to the longitudinal members, beingwelded at intervals to difl'erent ribs of one of the longitudinalmembers and staggered relative to the general direction of the beam.

In testimony whereof I hereunto afiix my. signature this 22nd day'ofApril, 1926.

CHARLES SCHENGK.

